Improvement in feed-water



E. R. STILLWELL, FEED WATER HEATER FOR BOILERS.

Patented Aug. 18, 1868.

v fnwc EDWIN li- STILWELL, OF DAYTON, OHIO.

Letters Patent No. 81,117, dated August 18, 1868.

IMPROVEMENT IN FEED-WATER HEATERS- FOR BOILERS.

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TO ALL WHOM IT MAY CONCERN:

Beit known that I, EDWIN It. STILWELL, of Dayton, in the county ofllIontgomcry,-and State of Ohio, have invented a certain new and usefulImprovement in Feed- VVater Hcaters; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawings,making part of this specification, in which Figure 1 is a perspectiveview of my improved feed-water heater.

Figure 2 is a view of one-half of the interior, as" it appears when theheater 'i's -o'pened, for the purpose of removing the lime andother-impurities deposited on the shelves. i

. Figure 3 is a top view of one of the shelves I I. V

Figure 4 is a perspective view of the steam pipe I-I, showing-theopenings in the shelves and thc steam-pipe, and the dripping-troughs ith.

The nature of my invention eonsists- First, in providing theinduction-water pipe of a feod-water-'heater with a distributing-disk,for the purpose of causing the water to descend in a thin sheet. 7 I lSecond, in the employment of a series of -orifices for the introductionof steam at difi'erent levels, so as to bring it simultaneously incontact with the water in allpartsot' the heater; and

Third, in the details of construction.

i In the drawings, A represents the case of afeed-wate'r'heater. It isrepresented as cylindrical, but may be made of any figure, with curvedor plane surface s. E is the induction-steam pipe, connected with theexhaustvalves of the engine, and receiving its" steam from them. D isthe eduction-steam pipe. Gjis the inductionwater pipe,- through whichthe water to be heated and purified enters the-heater. 'It is providedwith a Valve, X, which is so operated asto admit water only each exhaustofsteam from the engine, so that the water may enter the heater atintervals simultaneously the steam. K is the eduction-water pipe forconveying the heated and cleansed water to the boilers. I The casemay-be made in two parts hinged togethor,'and further secured by belts,or it may be connected by bolts only. i 1

The water, upon entering the heater through the pipe C,-is di schai 'gedwithin andnear the bottom of the Overflow-box F, fills the box, andflows out upon the distributing-disk G, from which it would fall in athin sheet upon the upper shelf 1, it it were not met by aburre nt-ofisemen-omen topof the steam-pipe H, which dashes it into spray and throwsit outward toward the i'nne I ll's' of "th ecase. It then falls uponshelf I, and flows inward. toward the opening 2', near the pipe -'I-I.Descending through this opening, it falls toward the second shelf, I butin passing the orifice j in the steam-pipe,-i.it is met by a current ofsteam, and again dashed into spray, and throwntoward the circumferenceof theshel fig desired,- and'toprevent all possibility of the waterentering the orifieesof the steam-pipe, and to check aigt 0 rapiddescent of the falling water, drippingtroughs or supplementary shelves,h It, maybe attached to th'o'steam-pipe, just below the opcningin eachshelf, and just above the orifice in the steam-pipe, projectingtowardthe case for enough to throw the'watcr beyond the outer edge ofthe opening in the sh lf below. I do not, however, consider theseshields or dripping-troughs essential. r

The water having descended, as described, to the second shelf, continuesto fall from shelf-to shelf in the lame manner, meeting, as it passesthrough each opening, with a fresh current of steam, which separates itinto spray, greatly agitates it, heats it, and cleanses it from lime andother impurities, which are deposited on the shelves. In this way itwill be seen that a series of steam-currents is in simultaneous actionbelow each shelf, and acting upon each fall of water, which is thusthoroughly heated and purified.

Having thus desbribed my invention, what I claim therein as new, anddesire to secure byLcttcrs Patout, is

i. A distributing-disk,' located above the series of shelves, to receiveand distribute the water from the induction-water pipe, substantiallyasdescribed.

2. A series of shelves to check the fiow and receive the impurities ofwater, in combination with a. steampipe or pipes, arranged substantiallyas described, andv provided with o series of orifices for introducingthe steam at different levels, so as to bring several currents of steaminto fresh and simultaneous action upon the wuter substantially asdescribed.- I Y 1 l 3. The induction-steam pipe H, entering below theseries of shelves, and provided with a series of openings for the escapeof steam, substantially as described.

4. The dripping-troughs h 7:, arranged substantially as and for thepurpose described.

EDWIN ST-ILWELL.

Witnesses:

E. NELSOX Bryn-en, E. S. Yonxe.

